Waves In Hot Magnetized Plasma Research Articles

Traveling waves and plasma acceleration in Quasi-Steady Plasma Accelerators (QSPAs) with longitudinal field

We find and classify plane traveling waves in hot magnetized plasma in the case of zero transverse electric field (in the reference frame of background plasma motion). On the basis of these results, we evaluate the possibilities of using QSPAs with longitudinal magnetic field for plasma acceleration in plasma accelerator channels.

Nonlinear waves in hot magnetized plasma

Nonlinear low-frequency long wavelength waves are studied in the framework of the proposed method of the direct kinetic equation expansion in the inverse gyrofrequency power series. Nonlinear two-dimensional equations are found for perpendicular magnetosonic waves with subsequent reduction to the Korteweg–de Vries equation for quasistationary one-dimensional (QS1D) perpendicular magnetosonic wave. The dispersion is determined by the ion gyroradius ρi. Equations for nonlinear QS1D parallel Alfvén waves and QS1D oblique fast magnetosonic waves are found. It is shown that the form of the equations coincides with that one obtained from hydrodynamics but the dispersion lengths and coefficients at nonlinear terms are different. Dispersion of quasiparallel fast waves is positive and determined by the ion inertial length c/ωpi, while quasiperpendicular waves have negative dispersion determined by the ion gyroradius ρi.